patch-2.4.0-test12 linux/include/asm-m68k/bitops.h

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diff -u --recursive --new-file v2.4.0-test11/linux/include/asm-m68k/bitops.h linux/include/asm-m68k/bitops.h
@@ -83,6 +83,12 @@
 	return retval;
 }
 
+/*
+ * clear_bit() doesn't provide any barrier for the compiler.
+ */
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
 #define clear_bit(nr,vaddr) \
   (__builtin_constant_p(nr) ? \
    __constant_clear_bit(nr, vaddr) : \

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